Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Pump flow rate

Stokehold Member Posts: 43
This has probably been discussed before, but is it ok to use a full port ball valve to throttle a circulator? For example, if I require a flow rate not exceeding 4 GPM, can I use a Taco 006 and throttle it? This circulator is between 0-10 GPM and I am thinking the only advantage to using a smaller pump like a 003 would be electricity if the pump is in continuous duty.


  • hot_rod
    hot_rod Member Posts: 22,271
    I like the B&G Vario for that type of single zone?, fixed speed application. Really no need to throttle these small circs any more.

    With the Vario you get sleepless speed control, although it looks more like a 7 speed circulator. Plus the advantage of ECM motor technology.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream